Nissl granules nyob qhov twg?

Video: Nissl granules nyob qhov twg?

2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44

1. nissl's granules yog pom nyob rau hauv lub cell ntawm ib tug neuron. nws granules yog endoplasmic reticulum, uas muaj cov pab pawg ntawm ribosomes. Cov no yog cov sib xyaw ntawm ribonucleoprotien.

Kuj nug, qhov twg pom nissl granules thiab lawv qhov xwm txheej yog dab tsi?

Cov no granules yog ntawm ntxhib endoplasmic reticulum (RER) nrog rosettes dawb ribosomes, thiab yog qhov chaw ntawm cov protein synthesis. Nissl cov granules yog pom Nyob rau hauv lub cev ntawm neuron tshwj xeeb tshaj yog nyob rau hauv RER (ntxhib endoplasmic reticulum. Lawv tsim lub hauv paus ntawm protein synthesis.

Tsis tas li ntawd, vim li cas nissl granules tsis nyob hauv axon? Cytoplasm nyob rau hauv cov ntshav axon hillock tsis tshwm sim kom muaj lub cev "sizing" barrier (zoo li lub lim) vim tias cov organelles loj xws li mitochondria nkag mus rau hauv lub cev. axon Txawm li cas los xij, tsuas yog qee qhov tseem ceeb tsis suav nrog cov qauv xws li polysomes qee zaus pom tsuas yog hauv thawj ntu ntawm axon thiab

Ntxiv mus, dab tsi yog txoj haujlwm ntawm nissl granules?

protein synthesis

nissl lub cev tsim dab tsi?

Muaj nuj nqi. Cov haujlwm ntawm Nissl cev yog xav kom zoo ib yam li qhov seem ntawm ER thiab Golgi cov cuab yeej: tus tsim khoom thiab tso cov protein thiab amino acids. Ultrastructure ntawm Nissl cev qhia lawv yog Feem ntau cuam tshuam nrog kev sib txuas ntawm cov proteins rau kev siv intracellular.

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